2303531 has 2 divisors, whose sum is σ = 2303532. Its totient is φ = 2303530.

The previous prime is 2303513. The next prime is 2303533. The reversal of 2303531 is 1353032.

Together with previous prime (2303513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2303531 - 2¹⁸ = 2041387 is a prime.

It is a super-2 number, since 2×2303531² = 10612510135922, which contains 22 as substring.

Together with 2303533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2303533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1151765 + 1151766.

It is an arithmetic number, because the mean of its divisors is an integer number (1151766).

2^2303531 is an apocalyptic number.

2303531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2303531 is an equidigital number, since it uses as much as digits as its factorization.

2303531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 2303531 is about 1517.7387785782. The cubic root of 2303531 is about 132.0681275196.

Adding to 2303531 its reverse (1353032), we get a palindrome (3656563).

The spelling of 2303531 in words is "two million, three hundred three thousand, five hundred thirty-one".